Plate-valve



-w. PIIEIIWIIZI PLATE VALVL APPLICATION FILED APR. 2, Iszo.

Patend Sept, 7, 192

a SHEETS-SHEET I.

W. PHELL'WITZ.

PLATE VALVE.

APPLICATION FILED APR. 2, -192o.

l Pmnmpn '231929.

3 SHEETS-SHEET 2.

\ Q v "mk INVENTOR.

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PLATE VALVE.

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Patented sepa 7,1926.,

.TEI-l" JERQEY, A CORPORATION OF NEW JERSEY.

Speoication of Letters Patent.

.appicaton fled april Easton, in the county ci? Northampton and n -otate oic Pennsylvania, have invented a cei'-,

tain new and useful Improvement in Plate- Valves, of which the following is a specii'ication.

This invention relates to plate valves for blowing engines, pumps, compressors and the like, but more particularly to a valve in which the valve plate is in the form oi a thin strip of sheet metal. ln'a valve or" this type thevalve seat is usually provided with a plurality of passage ways over which the valve plates are adapted to seat, and guard. or stop plate forms a stop for limiting the lit of the valve plates. Springs may be provided between the guard and valve plates for returning and seating the valve plates and in the usual constructions diiiicultv is experienced in assembling the parts and adjusting the springs over the valve plates, beeense the springs are ordinarily guided in sockets or recesses wit-hin 4the guard or stop plate. 1

The primary object ofthe present 1nvention is to secure a simple and convenient construction by means of which the springs may be inserted in or removed from the spring holding sockets or apertures in the guard i'roin the outside after the valve seat, valve plate or plates and guard have been assembled, Without disturbingl the ad'ustment of the parts already assembled. ucli a construction is a material advantage in a valve of this type, particularlyl in those cases in which a' lurality of valve plates are, used is obviously Idiilicult tok first arrange the valve 'plates on their seats, and then adjust the springs in the guard, and

finally assemble the parts 1n proper position and alinement.

ln accordance with my improved and simplified construction, the valve seat, valve plate or plates and guard o'r stop are first assembled as desired, and then one or more springs'areplaced in position in the guard over the valve plate or plates and any suit# able device or means, as a guard, adapted to'vbe removably secured to the guard for holding the springs in position.

Another advantage of this "onstruction oi' valve plates and springs resides in the fact that parallehmion ofthe valve plate/she'- plate, is

.in staggered relation to the Patented Sept. 7, 192).

1920. Serial No. 370,741.

tween the seat and guard is more certainly secured and maintained since the springs are more readily accessible and may be conveniently changed or adjusted as desired.

The invention is illustrated in several ofl its preferred :terms in the accompanying drawings in which-- Figure l is a sectional side elevation or" one form of valve having one spring for each valve plate,

,F ig. 2 is a perspective view partly in section of the valve seat shown in Fig. l and valve plates adapted to be seated thereon,

Fig. 3 is a perspective view Vartly in section of the guard shown in Fig. l and the springs and spring washers, shown separately, with a supplementary detail top plan view of a portion of the guard indicating the positions of the valve 4plates with relation to the passages in the guard.

Fig. l is a perspective view partly in sec.- tion of the guard plate shown in Fig. l,

ig. is a perspective view artly in section of the cap for the assembled parts of l the valve, l.

Fig. 6 is a sectional side elevation of a modified form of valve having a plurality of springs for the longer valve plates2 Fig. 7 is a. perspective view partly in section of the valve seat shown in Fig. 6 and valve plates for the same, Fig. 8 is a perspective view partly in section of the guard' shown in Fig. 6 and the springs and spring washers,

ig. 9 is a perspective view partly in section of the guard plate shown in Fig. 6,

Fig. l() is a perspective view partly in 4section or" the cap for the valve shown in Fig. 6, Fig. ll is a perspective view of a modified form oi guard plate, and

1g. l2 is a sectional side elevation of a.v

modified form of valve construction.

Referring to the drawings, and at first more particularly 'to Figs. l to 5 inclusive, represents a valve seat formed in this instance with' a plurality or" assage ways B over which the valve'plates (l) in the form of l narrow flat strips of sheet metal are adapted to be seated. A. guard D is mounted on the valve seat over the valve plates C and is provided as shown with the passage ways E and the bridges E2 adapted to lie over the valve plates C and provided with the end and centrally located recesses F in which passage ways B,

the apertures H intheguard upon 'the valve .shoes invany suitable manner.

l1s preferably provided for thefvalve when tween the same an recesses the valve plates are adapted to lift, formingguides for the, valve plates, so that the guard also constitutes the guide for the valve plates. The valve plates could also be made straight at their ends and additional intermediate side guides may be provided on the guard shown in Fig. 3 in the positions indicated for the intermediate guides F in Fig. 8.

In the construction shown in Figs. l to 5 a single spring is provided for each valve plate and in accordance with my constru tion the central web G ofthe guard D is formed with apertures H extending entirely throughthe web from face to face and preferably dared-toward the inner recessed pore tions F of the guard.

lln assembling the parts the guard D is preferably placed in an inverted position, the valve plates C are laid in the guide recesses F and the valve seat A is then placed on'top and the parts are then turned over. The valve springs` J which may be of. any suitable form, preferably coiled springs, are adapted to 'be inserted in the apertures H from the top and they are maintained in position in the apertures by any suitable means as for instance a guard plate Kl Which is secured on the web G of the guard over the springs as by means Vof the side bolts L passing through the apertures O in the guard' plate K and the apertures P in the guard and adapted to be seated in the screw threaded apertures Q in the valve seat A.. Any other suitable means may be' provided for holding the guard plate in position. l

Shoes or washers R are 'preferably 4provided for the springs J between the springs and the valve plates C and as shown these shoes or washers may be inserted through plates C and `.then the springs J placed upon the shoes, These shoes .R may be formed with ianges S for centering the springs and the springs are preferably lsecured to the the parts are assembled.,

If the shoes R were made larger in diameter to afford a lar er wearing surface bethevalve plates C, or

4if the springs andshoe's are fastened toether to form a unit. they may be inserted 1n the apertures H from'underneathbefore the valve plates C. are placed in their guiding slots or recesses F. Means are thus pro- Y l:vided in accordance ywith my construction 'ffor lapplying andzmamtaming pressure in the springs after the parts have been as- In accordance with this construction the springs J and shoes R may be inserted in orfsfemoved from the apertures H in the A'cap T' assenza `guard D after the valve seat, valve plates and guard have been assembled in position. The valve plates C are adapted to lift with parallel motion but if the sheet material from which the valve plates are made is sufiiciently thin and iexible, the ends of the valve plates may under certain circumstances lift before the body portion of the strips, as indicated in dotted lines at a in in Figs. 6 to 10 inclusive a modified construction is shown in which the guard D i is in the form of a disk having the passagee ways K2 and the wcbs oribridges Ks adapted to lie over the spring receiving apertures H and maintain the springs in position.

In Fig. 11 a modified form of guard plate U is shown having a body portion V and arms X and Y. The body portion V is adapted to cover the spring receiving apertures H and the arms X and Y are provided "with the bolt holes O for the retaining bolts.

ln Fig. l2 a modied form of valve is show'n in which the guard is provided with screw threaded apertures H adaptedto receive the recessed screw threaded' -plugs c .l

for holding the springs J in position in the guard. ln this instance each individual aperture H is provided with the spring retaining plug or socket o within which the spring is placed. This construction is advantageous in extremely large valves where the number of springs employed is large and each spring may be inserted separately' and in'ithe case of a spring breaking, a new one may be inserted .without taking the entire valve apart.

I claim- 1. A valve comprising a valve seat,- a

.valve plate adapted to be seated thereon,

a guard having an aperture to receive a springand means for..` applying and maintaining pressure 'on the spring after the parts have been assembled. v l2. A valve' comprismg a valve seat, a

lvalve plate adapted to be seated thereon, a

guard over said valve plate forming a stop, said guard having an aperture open at both faces of the. guard and adapted tto lie opposite said valve plate, so 'that a spring may be placed in said aperture after the valve seat, valvev plate and guard'have been assembled and means for holding said spring in 4 the aperture.

3. A valve comprising a valve seat, a

valve plate adapted to be seated on said seat, a guard forming a stop for limiting "the lift of the valve plate and provided with an apcrturepassing entirely through the guard from face to face, so that apspring may be Compression to said placed in said aperture over the valve plate from the outside', anda guard plate for holding said spring in position in the aperture.

4. A valve comprising a valve seat, a plate valve in the form of a strip of sheet metal adapted to be seated on said seat, a recessed guard over said valve plate forming a stop, means for inserting a spring through said guard over-the valve plate after the valve seat, valve plate and guard have been assembled and means for applying and maintaining compression on the spring after it is placed in position inthe guard.

5. A valve comprising a valve seat, 'a plate valve in the form of a strip of'slieet metal adapted to be sea-ted on said seat, a recessed guard over said valve plate form` ing a stop, an aperture passing through said guard lfrom taco to face and open. at both ends, affording means for inserting a spring in ythe'z'iperture over the valve plate after the guard is mounted in position, and a guard plate removably connected to the guard for holding the spring in position and applying spring.

6'. A valve comprising a valve seat, a valve plate adapted to be seated J on said seat, a guard mounted over the valve plate, a spring receiving aperture .in said guardover said valve plate Y removing a spring in said aperture after the lCured to the guard over said' and means for inserting and i,

guardie mounted over the valve plate and Without ri aoving 'the guard.

7. A lvalve comprising a valve seat having a plurality of passage Ways, plate valves adapted to be seated -ei the valve seat over said passage ways, a' guard mounted on the valve seat over said valve plates, apertures in said guard passing through the same from face to face and adapted to lie opposite the valve plates, springs removably inserted in said apertures from the outside, and a guard plate removably Connected to said guard for holding the springs in the apertures over the valve plates and applying compresm sion to said springs.

8. A valve comprising a valve'seat having a plurality of passage Ways, plate valves in the form of strips of sheet metal adapted to be lseated on said seat over the passage Ways, a guard-'@iounted on the valve'seat over the said plate valves and formed with bridges having guide ,recesses for the valve plates,

Asaid bridges also having apertures passing through from face to face for receiving springs, valve serted in said apertures over the valve plates, and a guard plate removably seholding the springs in-position and lapplying compression to said springs.

In testimony whereof I have'hereunto set In hand.

y WILLIAM PRELLVITZ springs adapted to be in-Y apertures for. 

